49名9～11.5岁青春前期女童钙吸收率研究  

Study on calcium absorption rate in premenarche Chinese girls aged 9-11.5 years

作　　者：罗晓林[1] 肖新才[2] 赖晓华 冯翔[1] 苏宜香[1] 

机构地区：[1]中山大学公共卫生学院营养系,广州510080 [2]广州市疾病预防控制中心 [3]江西省赣州市章贡区卫生防疫站

出　　处：《卫生研究》2005年第4期445-448,共4页Journal of Hygiene Research

基　　金：国家自然科学基金资助项目(No.30271120)

摘　　要：目的研究中国青春前期女童钙代谢状况,了解中国青春前期女童钙吸收率和影响钙吸收率的因素。方法选择49名处于生长突增期、未月经初潮的青春前期女童,采用经典钙代谢实验方法,在600～1500mgd范围内设计4个不同的钙摄入剂量组,观察研究对象的钙代谢状况。结果在600～1500mgd钙摄入量范围内,各组对象钙表观钙吸收率未发现差别,平均吸收率为(53±0.12)%(范围52%～55%)。膳食蛋白质水平与钙吸收率、粪钙量无相关关系,尿钙与膳食磷含量、蛋白质含量显著负相关(P<0.01)。结论中国青春前期女童钙的表观吸收率为53%;高膳食蛋白质能增加尿钙的排出。Objective\ To investigate the characteristics of calcium metabolism in relation to different levels of dietary calcium intakes in premenarche Chinese girls. Methods Forty-nine healthy premenarche girls of Han ethic ~9-11.5 years) were recruited, and divided into four groups respectively, receiving four different doses of calcium intakes for 6 days, 600 mg ~usual diet), 900 mg ~containing 250ml of milk), 1200 mg ~containing 250ml of milk and 750 mg of calcium carbonate) and 1500mg calcium ~250ml of milk and 1500 mg of calcium carbonate) per day. A 3-day urine and stool, and a 3-d duplicated food samples were collected to assess the calcium excretion in urine and feces and input of the dietary calcium during the treatment period. Results There were no significant differences in appearance calcium absorption among the four groups ~55%, 53%, 52% and 52%). Urine calcium is correlated negatively with dietary protein and dietary phosphorus. And no correlation was found between dietary protein and calcium absorption. Conclusion The appearance calcium absorption was ~53±0.12)% in Chinese premenarche girls with dietary calcium intakes ranged between 800 to 1600 mg/d, high dietary protein intakes increase urine calcium secrete.

关 键 词：钙 吸收率 青春期 女童 

分 类 号：R153.1[医药卫生—营养与食品卫生学]